At FunnelFox, we love talking to our customers and sharing their stories. Most of the time, that means hopping on a call, asking questions, and writing up a case study together.
But sometimes our customers beat us to it.
The awesome team at FitLens AI went ahead and wrote their own case study — straight from their perspective. It’s honest, practical, and a great look at how they’re using FunnelFox to build and test quiz funnels faster and smarter.
Read on to hear their story written by Enzo Vieira, CEO of FitLens AI.
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Project summary
At FitLens AI, we’re building a smart and personalized experience for users looking to transform their health through AI-powered nutrition and fitness guidance. Quizzes are a key part of how we attract users and match them to the right plan.
But creating and testing new quiz funnels manually—through our app—was slow, resource-intensive, and made experimentation difficult.
That changed when we started using FunnelFox.
By switching to their platform, we were able to design, test, and deploy multiple quiz funnels in a matter of days, instead of weeks. This gave us a huge edge in learning what works, optimizing for performance, and improving the overall user experience at scale.
Challenge
Before FunnelFox, every quiz had to be built inside the app itself. That meant relying on our dev team, going through QA cycles, and waiting for app store approvals every time we wanted to test a new approach. It often took two to three weeks just to launch a single quiz variation.
For a fast-moving team like ours, that bottleneck was holding us back. We needed a way to rapidly prototype, test, and optimize our funnels, without draining development resources or slowing our momentum.
Solution
FunnelFox allowed us to break free from those limitations.
With their intuitive funnel-building platform, we were able to:
- Create and launch multiple quiz funnels in a single week
- Test different messaging angles and flows with no engineering required
- Get instant feedback on what resonates with our users
The ease of use was game-changing. Our team could experiment with quiz formats and calls-to-action in real time, without touching the app code or submitting new builds. That speed led to faster learning, quicker iterations, and ultimately, better results.
Agility that drives results
The biggest win? Speed.
Thanks to FunnelFox, we were able to go from idea to live quiz in a single day. That speed meant we could test more hypotheses, gather data faster, and continuously optimize our acquisition flow.
And as we increased our testing velocity, we started seeing real improvements in performance metrics, particularly in cost per acquisition and quiz completion rates.
The platform didn’t just help us move faster — it helped us grow smarter.
Final thoughts
FunnelFox gave us the flexibility and speed we needed to stay ahead in a competitive space. Without it, we’d still be stuck in long development cycles, testing one quiz at a time.
Now, we’re constantly iterating, learning, and improving—without burning time or engineering hours.
If you’re building mobile apps and want to scale faster while staying lean, FunnelFox is more than just a tool — it’s a strategic advantage.
